Task 3: Analyze data from charts and diagrams

PC2.3: Identify data using either frequency or relative frequency from suitable fully labelled diagrams: bar charts, component bar charts, pie charts, pictograms	Tasks 3.1 & 3.2	Can identify data using either frequency or relative frequency from suitable fully labelled diagrams	Cannot identify data using either frequency or relative frequency from suitable fully labelled diagrams
PC2.4: Interpret descriptive data summarized in tables and diagrams.	Tasks 3.1 & 3.2	Able to summarize data from diagrams and charts in a proper frequency table	Not able to interpret descriptive data summarized in tables and diagrams
PC2.5: Collect data from practical work in other subjects and from publication	Tasks 3.1 & 3.2	Can summarize data in a frequency table from practical work in other subjects and from publications	Not able to summarize data in a frequency table from practical work in other subjects and from publications

3.1 In a survey, students were asked whether they are personally worried about a variety of environmental concerns. The numbers (out of 832 surveyed) who indicated that they worried about some selected concerns are summarized in the bar chart below.

350 300 250 200 150 100 50 air pollution Frequency global warming acid rain contamination of underground water by toxic waste